Lock and sheet-shaped door fence with same

Abstract

The utility model discloses a lock and a sheet-shaped door fence with the same, which are characterized in that on the basis of the prior art, through the connection matching of a hook part and a hook groove, when a ribbon or a rope at a corresponding position is cut off, an outer door fence is still kept in connection matching with the lock, and the condition of local resetting is avoided. Therefore, the situation that the human body is possibly injured due to resetting is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of protective railings, in particular to a lock and a sheet-shaped railing with the same. Background Art

[0002] With the progress of social economy, people's safety awareness is getting higher and higher. Especially for children, not only the safety problems outdoors are emphasized, but also the safety problems indoors are emphasized. Therefore, parents usually set up safety railings at positions such as indoor aisles and stairways to eliminate potential dangers.

[0003] At present, the safety railings for children or pets on the market generally include an outer railing and an inner railing. The outer railing is fixed at the installation position to be installed, and mainly includes a horizontal bottom rod and two vertical rods respectively fixed at both ends of the bottom rod. The inner railing is located between the two vertical rods, one side is rotatably connected to one of the vertical rods, the other side is provided with a railing lock, and a lock groove cooperating with the railing lock is arranged on the other vertical rod. Through the cooperation of the railing lock and the lock groove, the outer railing and the inner railing are locked.

[0004] In the prior art, the outer railing is mainly fixed by keeping it in tight contact with various positions of the installation position to be installed at several positions respectively. However, since the vertical rod is in a vertical state, for the vertical rod provided with the lock groove, the force generated by the tight contact forces the vertical rod to tilt, making the lock groove too close to the railing lock, exceeding the matching position with the locking tongue of the railing lock, resulting in the mismatch between the inner railing and the outer railing. In order to avoid the problem of mismatch, usually the vertical rod with the lock groove is set to be slightly inclined, so that the upper end of the vertical rod is slightly away from the railing lock. In this way, after the assembly is completed, the vertical rod can be slightly deformed by the pressure of the installation position to be installed to achieve position correction, and the upper end of the vertical rod moves towards the direction of the railing lock due to the railing lock, so that the lock groove reaches the position matching the railing lock. At the same time, the upper end of the vertical rod can be elastically in contact with the installation position to be installed to improve a certain fixing strength.

[0005] When the product leaves the factory, in order to facilitate the packaging of the product and the assembly with the installation position to be installed, when the lock groove is in the position matching the railing lock, the vertical rod with the lock groove and the inner railing are tied up at an appropriate position by a cable tie or a rope, etc., so that the vertical rod remains deformed and the lock groove remains in the position matching the railing lock. After the assembly with the installation position to be installed is completed, the cable tie or the rope can be cut off. For this reason, a special description is also made in the installation steps of the product instruction manual.

[0006] There are the following deficiencies: Sometimes, without the consumer's knowledge, the product is taken out of the packaging box and the tie or rope is directly cut. At the moment when the tie or rope breaks, a part of the outer door rail, that is, one of the vertical rods, will relieve the deformation and reset, causing the lock slot to move away from the door rail lock. The reset process is fast and short, and the instantaneous explosive force is relatively large. When coming into contact with the human body during the process, it is easy to cause harm to the human body. Summary of the Utility Model

[0007] The main object of the present utility model is to propose a lock and a sheet-shaped door rail having the same, aiming to solve the deficiencies mentioned in the above background technology.

[0008] To achieve the above object, the present utility model proposes a lock, including:

[0009] A first connecting seat, the outer wall of the first connecting seat is provided with a hook portion;

[0010] A lock tongue, the lock tongue is movably arranged in the first connecting seat, and the lock tongue can move relative to the first connecting seat between a position where it partially extends out of the first connecting seat and a position where it retracts into the first connecting seat;

[0011] A first top spring, the first top spring is arranged in the first connecting seat, and is used to apply an elastic force to the lock tongue in the direction of partially extending out of the first connecting seat;

[0012] A button, the button is movably installed on the first connecting seat and is connected to the lock tongue in a linkage manner. The button can move vertically back and forth relative to the first connecting seat, and can overcome the elastic force applied by the first top spring when moving downward to drive the lock tongue to move in the direction of retracting into the first connecting seat;

[0013] A locking key, the locking key is pivotally installed on the first connecting seat, and can swing relative to the first connecting seat between a position where the button is locked and a position where it is unlocked.

[0014] Preferably, the first connecting seat is further provided with a second top spring, which is used to apply an elastic force to the button in the upward direction of movement.

[0015] Preferably, the first connecting seat is provided with a first accommodating cavity, and a sleeve that is in linkage cooperation with the button is movably installed in the first accommodating cavity. The sleeve can move relative to the first connecting seat between a position flush with the opening of the first accommodating cavity and a position away from it. The lock tongue is movably inserted into the sleeve and has a part exposed outside the sleeve. One end of the first top spring elastically abuts against the inner wall of the first accommodating cavity, and the other end elastically abuts against the lock tongue.

[0016] Preferably, the button is provided with a driving part extending into the first accommodating cavity, and the position of the ferrule corresponding to the driving part below is provided with a guide surface for contacting the driving part, and when the button moves downward, the driving part and the guide surface cooperate to drive the ferrule to move in a direction away from the opening of the first accommodating cavity.

[0017] Preferably, the first connecting seat is provided with a second accommodating cavity, the button is movably installed in the second accommodating cavity, one end of the second top spring is elastically abutted against the bottom wall of the second accommodating cavity, and the other end is elastically abutted against the bottom wall of the button, the second accommodating cavity is provided with a limiting groove, and the button is provided with a limiting block that can extend into the limiting groove and move therein, so as to limit the button from detaching from the second accommodating cavity through the cooperation between the limiting block and the limiting groove.

[0018] Preferably, the first connecting seat is provided with a third accommodating cavity, and a vertically extending guide hole is opened on a side of the third accommodating cavity close to the first accommodating cavity to connect the first accommodating cavity with the third accommodating cavity. The locking key is in the shape of an elongated strip, and one end of the locking key can be pivotally mounted on the third accommodating cavity, and the other end of the locking key is provided with a positioning portion that can movably pass through the guide hole. The locking key can swing relative to the first connecting seat between positions where the positioning portion and the ferrule are opposite and staggered. When the positioning portion and the ferrule are opposite, the ferrule can limit the movement of the ferrule in the direction of retreating into the first accommodating cavity.

[0019] Preferably, a third top spring is further provided, one end of which elastically abuts against the inner wall of the third accommodating cavity, and the other end of which elastically abuts against the locking key, for applying an elastic force to the locking key to swing in the direction relative to the positioning portion and the ferrule.

[0020] Preferably, the hook is L-shaped, and the lower end of the hook is connected to the first connecting seat.

[0021] The utility model also proposes a sheet-like door fence, including an outer door fence, an inner door fence pivotally mounted on the outer door fence, and a lock, wherein the lock is the above-mentioned lock, and the lock is mounted on the inner door fence. The outer door fence is provided with a lock groove for cooperating with the lock tongue, and the inner door fence can swing relative to the outer door fence between a position in which the lock tongue and the lock groove are aligned and staggered. The outer door fence is also provided with a hook groove cooperating with the hook portion, and the hook portion can swing between a position of entering the hook groove and a position of exiting as the inner door fence swings.

[0022] Preferably, the lock slot is directly formed on the outer door rail, or a second connecting seat having the lock slot is further provided, and the second connecting seat is installed on the outer door rail.

[0023] Preferably, a moving block is movably installed in the lock slot, and the moving block can move between a position flush with the lock slot opening and a position away from the lock slot opening. A fourth top spring is also provided, and the fourth top spring is used to apply an elastic force to the moving block to move in a direction flush with the lock slot opening.

[0024] Preferably, a movable pin is movably installed at a position corresponding to the lock at the bottom of the inner door fence, and a lock hole is provided at a position below the movable pin corresponding to the outer door fence. The movable pin is linked to the locking key through a pull rope and can move between the insertion position and the withdrawal position of the lock hole as the locking key swings. A fifth top spring is also provided, and the fifth top spring is used to apply an elastic force to the movable pin to move in the direction of insertion into the lock hole.

[0025] Preferably, a first swinging piece of a connecting shaft is fixed to the top of the inner door fence on the side away from the lock, and the outer door fence is provided with an axis hole, the connecting shaft is inserted into the axis hole from top to bottom to realize the rotational cooperation between the first swinging piece and the outer door fence, and a limit piece is provided at the free end of the connecting piece to limit the connection shaft from being separated from the axis hole; a second swinging piece is fixed to the bottom of the inner door fence on the side away from the lock, and a latch is fixed to the outer door fence, and one end of the second swinging piece is rotationally connected to the latch.

[0026] Preferably, a guide groove is formed at the opening position of the upper end of the shaft hole, and a guide portion for contacting the guide groove is formed at a position above the first swinging member corresponding to the guide groove. When the first swinging member swings along with the inner door rail in the direction where the lock tongue and the lock groove are staggered, the first swinging member can rise relative to the seat body through the cooperation of the guide portion and the guide groove.

[0027] Preferably, a latch is formed with a latching position at the upper end, and a latch block adapted to the latching position is formed on the second swinging member. The latch block can move between the position of entering the latching slot and the position of being away from the latching slot as the inner door rail swings. When the lock tongue is aligned with the lock slot, the latch block is located in the latch slot.

[0028] Preferably, the outer door rail is fixed to the installation position by a fixing mechanism, and the fixing mechanism includes a locking member movably screwed to the outer door rail, and the locking member can move relative to the outer door rail between a position in close contact with and a position separated from the installation position, and the locking member is also screwed to a locking member, and the locking member can move relative to the locking member between a position in close contact with the outer door rail to lock and a position separated from the locking member.

[0029] The technical solution of the present utility model provides a lock groove and a hook groove on the outer door rail, and a lock is provided on the inner door rail. The lock includes a first connecting seat and a lock tongue for cooperating with the lock groove. A hook portion for cooperating with the hook groove is further provided on the outer wall of the first connecting seat. The inner door rail can swing relative to the outer door rail to form an opening or closing action. The hook portion can swing between a position where it enters the hook groove and a position where it exits as the inner door rail swings. When the lock groove is aligned with the lock tongue of the locking mechanism, the hook portion and the hook groove are connected and engaged. At this time, the lock tongue can extend into the lock groove to lock the inner door rail and the outer door rail, and the lock can be kept connected to the outer door rail through the connection and engagement of the hook portion and the hook groove. Compared with the traditional ones, on the basis of the existing technology, the present utility model ensures that when the tie straps or ropes at the corresponding positions are cut, the outer door rail is still connected and cooperated with the lock through the connection and cooperation of the hook portion and the hook groove, and there will be no situation of partial reset, thereby avoiding the situation where possible harm to the human body may occur due to reset. When it is necessary to release the lock between the inner door rail and the outer door rail, the first connecting seat can be held by hand, and the locking key can be driven to swing to the position where the button is unlocked by some fingers, and then the button can be pressed by the thumb to drive the lock tongue to exit the lock groove to complete the unlocking action. The unlocking process conforms to ergonomics, is easy and convenient, and has a certain operation difficulty for children, effectively preventing children from easily learning to unlock by themselves. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a perspective view of the lock;

[0031] Figure 2 is a first-angle exploded view of the lock;

[0032] Figure 3 is a second-angle exploded view of the lock;

[0033] Figure 4 is a cross-sectional view of the lock;

[0034] Figure 5 is a perspective view of the sheet-shaped door rail;

[0035] Figure 6 is a schematic diagram of the inner door rail and the outer door rail;

[0036] Figure 7 is an exploded view of the sheet-shaped door rail;

[0037] Figure 8 is a first partial cross-sectional view of the sheet-shaped door rail;

[0038] Figure 9 is a second partial cross-sectional view of the sheet-shaped door rail. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0040] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0041] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present utility model, then such descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0042] The present utility model provides a lock.

[0043] In the embodiments of the present utility model, as Figures 1 to 9 shown, the lock includes a first connection seat 1, a lock tongue 2, a first top spring 12, a button 3, and a locking key 13.

[0044] Among them, a hook portion 11 is provided on the outer wall of the first connection seat 1; the first top spring 12 is arranged inside the first connection seat 1 and is used to apply an elastic force to the lock tongue 2 to move it in the direction of partially protruding from the first connection seat 1; the button 3 is movably installed in the first connection seat 1 and is connected to the lock tongue 2 in a linkage manner. The button 3 can make a vertical reciprocating movement relative to the first connection seat 1 and can, when moving downward, overcome the elastic force applied by the first top spring 12 to drive the lock tongue 2 to move in the direction of retracting into the first connection seat 1; the locking key 13 can be pivotally installed in the first connection seat 1 and can swing relative to the first connection seat 1 between positions for locking and unlocking the button 3.

[0045] Specifically, the first connection seat 1 further is provided with a second top spring 14 for applying an elastic force to the button 3 to move it in the upward direction.

[0046] Specifically, the first connecting seat 1 is provided with a first accommodating cavity 15, in which a sleeve 21 which cooperates with the button 3 is movably installed, and the sleeve 21 can move relative to the first connecting seat 1 between a position flush with and a position away from the opening of the first accommodating cavity 15. The lock tongue 2 is movably inserted in the sleeve 21 and partially passes through the sleeve 21 and is exposed to the outside. One end of the first top spring 12 elastically resists against the inner wall of the first accommodating cavity 15, and the other end elastically resists against the lock tongue 2.

[0047] When the button 3 moves downward, the second top spring 14 is compressed and the card sleeve 21 is driven to move away from the opening of the first accommodating chamber 15, and the first top spring 12 is compressed at the same time. The first top spring 12 is released to release the elastic force to force the card slot to move in a direction flush with the opening of the first accommodating chamber 15. The button 3 can be automatically reset by the elastic force released by the second top spring 14. On the other hand, the exposed part of the lock tongue 2 can be pushed by external force so that the lock tongue 2 moves away from the lock slot 100 and the first top spring 12 is compressed at the same time.

[0048] Specifically, the button 3 is provided with a driving part 31 extending into the first accommodating cavity 15, and the position of the sleeve 21 corresponding to the driving part 31 is provided with a guide surface 22 for contacting the driving part 31. When the button 3 moves downward, the driving part 31 and the guide surface 22 can cooperate to drive the sleeve 21 to move away from the opening of the first accommodating cavity 15.

[0049] Specifically, the first connecting seat 1 is provided with a second accommodating cavity 16, and the button 3 is movably installed in the second accommodating cavity 16. One end of the second top spring 14 elastically abuts against the bottom wall of the second accommodating cavity 16, and the other end elastically abuts against the bottom wall of the button 3. The second accommodating cavity 16 is provided with a limiting groove 161, and the button 3 is provided with a limiting block 32 that can extend into the limiting groove 161 and move therein, so as to limit the button 3 from detaching from the second accommodating cavity 16 through the cooperation between the limiting block 32 and the limiting groove 161.

[0050] Specifically, the first connecting seat 1 is provided with a third accommodating chamber 17, and a vertically extending guide hole 171 is opened on one side of the third accommodating chamber 17 close to the first accommodating chamber 15 to connect the first accommodating chamber 15 with the third accommodating chamber 17. The locking key 13 is in the shape of an elongated strip, and one end of the locking key 13 can be pivotally mounted on the third accommodating chamber 17, and the other end of the locking key 13 is provided with a positioning portion 131 that can movably pass through the guide hole 171. The locking key 13 can swing relative to the first connecting seat 1 between positions where the positioning portion 131 and the ferrule 21 are opposite and staggered. When the positioning portion 131 is opposite to the ferrule 21, the ferrule 21 can be restricted from moving in a direction of retreating into the first accommodating chamber 15.

[0051] Specifically, a third top spring 18 is provided, one end of which elastically abuts against the inner wall of the third accommodating cavity 17 , and the other end of which elastically abuts against the locking key 13 , for applying elastic force to the locking key 13 to swing in the direction relative to the positioning portion 131 and the sleeve 21 .

[0052] Specifically, a strip member 19 is also provided. When the first connecting seat 1 is assembled with the inner door sill 5, after the partial top wall, partial front wall and partial rear wall of the inner door sill 5 are covered by the third accommodating cavity 17, the strip member 19 is installed in the third accommodating cavity 17 to cover the partial bottom wall of the inner door sill 5. The strip member 19, the inner door sill 5 and the first connecting seat 1 are locked together by screws. A pivot portion is provided at the end of the locking key 13 away from the lock tongue 2, and a cover body 191 is also provided. The cover body 191 cooperates with the strip member 19 to form a pivot groove for rotatably cooperating with the pivot portion. The cover body 191 is locked with the strip member 19 by screws to realize the pivotal connection between the locking key 13 and the first connecting seat 1.

[0053] Specifically, the hook portion 11 is L-shaped, and the lower end of the hook portion 11 is connected to the first connecting seat 1 .

[0054] The utility model also proposes a sheet-like door fence, including an outer door fence 4, an inner door fence 5 pivotally mounted on the outer door fence 4, and a lock. For other specific contents of the lock, reference can be made to the above-mentioned embodiments. Since the sheet-like door fence adopts all the technical solutions of all the embodiments of the lock, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here. The lock is installed on the inner door fence 5, the outer door fence 4 is provided with a lock groove 100 for cooperating with the lock tongue 2, the inner door fence 5 can swing relative to the outer door fence 4 between the position of aligning and staggering the lock tongue 2 and the lock groove 100, the outer door fence 4 is also provided with a hook groove 200 cooperating with the hook portion 11, and the hook portion 11 can swing between the position of entering the hook groove 200 and exiting as the inner door fence 5 swings.

[0055] Specifically, the lock slot 100 is directly formed on the outer door rail 4, or a second connection seat 41 having the lock slot 100 is further provided, and the second connection seat 41 is installed on the outer door rail 4. Specifically, the outer wall of the second connection seat 41 is formed with an inclined surface 42 for contacting the exposed portion of the lock tongue 2. When closing the door, the inclined surface 42 can contact the exposed portion of the lock tongue 2 and force the lock tongue 2 to move in the direction of exiting the lock slot 100 until the lock tongue 2 is aligned with the lock slot 100, and then the elastic force applied by the first top spring 12 forces the exposed portion of the lock tongue 2 to be inserted into the lock slot 100.

[0056] Specifically, a moving block 43 is movably installed in the lock slot 100, and the moving block 43 can move between a position flush with the opening of the lock slot 100 and a position away from the opening of the lock slot 100. A fourth top spring 44 is also provided, and the fourth top spring 44 is used to apply an elastic force to the moving block 43 to move in a direction flush with the opening of the lock slot 100. It should be noted that the elastic force applied by the fourth top spring 44 should be smaller than the elastic force applied by the first top spring 12.

[0057] Specifically, a movable pin 51 is movably installed at the bottom of the inner door fence 5 corresponding to the position of the lock, and a lock hole 300 is provided at the position below the outer door fence 4 corresponding to the movable pin 51. The movable pin 51 is linked with the lock key 13 through a pull rope 52 and can move between the position of inserting into the lock hole 300 and the position of withdrawing with the swing of the lock key 13. A fifth top spring 53 is also provided, and the fifth top spring 53 is used to apply elastic force to the movable pin 51 to move in the direction of inserting into the lock hole 300. When the lock key 13 swings to unlock the button 3, the movable pin 51 withdraws from the lock hole 300.

[0058] Specifically, a first swinging member 61 of a connecting shaft 62 is fixed to the top of the inner door fence 5 on the side away from the lock, and the outer door fence 4 is provided with an axis hole 63. The connecting shaft 62 is inserted into the axis hole 63 from top to bottom to realize the rotational cooperation between the first swinging member 61 and the outer door fence 4, and a limit member 64 is provided at the free end of the connecting member to limit the connection shaft 62 from being separated from the axis hole 63; a second swinging member 65 is fixed to the bottom of the inner door fence 5 on the side away from the lock, and a latch 66 is fixed to the outer door fence 4, and one end of the second swinging member 65 is rotationally connected to the latch 66.

[0059] Specifically, a guide groove 67 is formed at the opening position of the upper end of the shaft hole 63, and a guide portion for contacting the guide groove 67 is formed at the position above the first swinging member 61 corresponding to the guide groove 67. When the first swinging member 61 swings with the inner door rail 5 in the direction of the staggered direction between the lock tongue 2 and the lock groove 100, the first swinging member 61 can move upward relative to the seat body through the cooperation between the guide portion and the guide groove 67. And the automatic door closing can be achieved through the cooperation between the guide groove 67 and the contact portion. Specifically, the connecting shaft 62 is sleeved with a sixth top spring 621, one end of the sixth top spring 621 elastically abuts against the limiter 64, and the other end elastically abuts against the inner top wall of the shaft hole 63, and is used to apply an elastic force to the inner door rail 5 to swing in the door closing direction.

[0060] Specifically, a latch position is formed on the upper end of the latch pin 66, and a block 68 adapted to the latch position is formed on the second swinging member 65. The block 68 can move between the position of entering the slot and the position of being away from the slot as the inner door rail 5 swings. When the lock tongue 2 is aligned with the lock slot 100, the block 68 is located in the slot.

[0061] Specifically, the outer door fence 4 is fixed to the position to be installed by a fixing mechanism, and the fixing mechanism includes a locking member 71 movably screwed to the outer door fence 4, and the locking member 71 can move between a position in close contact with and a position separated from the position to be installed relative to the outer door fence 4, and the locking member 71 is also screwed to a locking member 72, and the locking member 72 can move between a position in close contact with the outer door fence 4 to lock and separate the locking member 71 relative to the locking member 71. The locking member 72 is formed with a plurality of clamping parts at annular intervals on one side close to the outer door fence 4, and a recess is formed at a position corresponding to the clamping part of the outer door fence 4, and when the locking member 72 is in close contact with the outer door fence 4, the clamping part is located in the recess.

[0062] Specifically, the outer door fence 4 includes a cross bar and two vertical bars respectively fixed at both ends of the cross bar. The inner door fence 5 is located above the cross bar and corresponds to a position between the two. The inner door fence 5 is a frame-shaped component formed by multiple connecting rods or a sheet-like component with multiple hollows. When it is a frame-shaped component, the inner door fence 5 is covered with software. Of course, when it is a sheet-like component, it can also be covered with software.

[0063] The technical solution of the utility model is to provide a lock groove and a hook groove on the outer door fence, and to provide a lock on the inner door fence, the lock comprises a first connecting seat and a lock tongue for cooperating with the lock groove, the outer wall of the first connecting seat is also provided with a hook part for cooperating with the hook groove, the inner door fence can swing relative to the outer door fence to form an opening or closing action, the hook part can swing between the position of entering the hook groove and the position of exiting with the swing of the inner door fence, when the lock groove is aligned with the lock tongue of the locking mechanism, the hook part and the hook groove are connected and engaged, at this time the lock tongue can be extended into the lock groove to lock the inner door fence and the outer door fence, and the lock can be connected and engaged with the hook part and the hook groove to keep the lock connected with the outer door fence. Compared with the traditional method, the utility model has On the basis of the existing technology, the connection and cooperation between the hook and the hook groove ensure that when the cable tie or rope at the corresponding position is cut, the outer door rail remains connected and cooperates with the lock, and no local reset occurs, thereby avoiding the possibility of harm to the human body due to reset. When it is necessary to unlock the inner door rail and the outer door rail, the first connecting seat can be held with the palm of the hand, and the locking key can be driven by some fingers to swing to the position to unlock the button, and then the thumb button can be used to drive the lock tongue to exit the lock slot to complete the unlocking action. The unlocking process is ergonomic, easy and convenient, but has a certain degree of operating difficulty for children, which effectively prevents children from easily learning to unlock by themselves.

[0064] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A lock, characterized in that, Comprising: A first connecting seat (1), an outer wall of the first connecting seat (1) is provided with a hook portion (11); A locking tongue (2), the locking tongue (2) is movably arranged in the first connecting seat (1), and the locking tongue (2) can move relative to the first connecting seat (1) between a position where it partially extends out of the first connecting seat (1) and a position where it retracts into the first connecting seat (1); A first compression spring (12), the first compression spring (12) is arranged in the first connecting seat (1) and is used to apply an elastic force to the locking tongue (2) to move it in the direction of partially extending out of the first connecting seat (1); A button (3), the button (3) is movably installed on the first connecting seat (1) and is linked with the locking tongue (2). The button (3) can make a vertical reciprocating movement relative to the first connecting seat (1), and when moving downward, it can overcome the elastic force applied by the first compression spring (12) to drive the locking tongue (2) to move in the direction of retracting into the first connecting seat (1); A locking key (13), the locking key (13) is pivotally installed on the first connecting seat (1) and can swing relative to the first connecting seat (1) between a position of locking and unlocking the button (3); 2. The lock according to claim 1, characterized in that: The first connecting seat (1) is further provided with a second compression spring (14) for applying an elastic force to the button (3) to move it in the upward direction; 3. The lock according to claim 1, characterized in that: The first connecting seat (1) is provided with a first accommodating cavity (15), and a sleeve (21) that is linked and cooperates with the button (3) is movably installed in the first accommodating cavity (15). The sleeve (21) can move relative to the first connecting seat (1) between a position flush with the opening of the first accommodating cavity (15) and a position away from it. The locking tongue (2) is movably inserted into the sleeve (21) and has a part exposed outside the sleeve (21). One end of the first compression spring (12) elastically abuts against the inner wall of the first accommodating cavity (15), and the other end elastically abuts against the locking tongue (2); 4. The lock according to claim 3, characterized in that: The button (3) is provided with a driving portion (31) extending into the first accommodating cavity (15). A guiding surface (22) for contacting the driving portion (31) is provided at a position corresponding to the lower part of the driving portion (31) on the sleeve (21). When the button (3) moves downward, it can drive the sleeve (21) to move in the direction away from the opening of the first accommodating cavity (15) through the cooperation between the driving portion (31) and the guiding surface (22); 5. The lock according to claim 2, characterized in that: The first connecting seat (1) is provided with a second accommodating cavity (16), the button (3) is movably installed in the second accommodating cavity (16). One end of the second compression spring (14) elastically abuts against the bottom wall of the second accommodating cavity (16), and the other end elastically abuts against the bottom wall of the button (3). The second accommodating cavity (16) is provided with a limiting groove (161), and the button (3) is provided with a limiting block (32) that can extend into the limiting groove (161) and move therein to limit the button (3) from detaching from the second accommodating cavity (16) through the cooperation between the limiting block (32) and the limiting groove (161); 6. The lock according to claim 3, characterized in that: The first connecting seat (1) is provided with a third accommodating chamber (17), and a vertically extending guide hole (171) is opened on one side of the third accommodating chamber (17) close to the first accommodating chamber (15) so as to connect the first accommodating chamber (15) with the third accommodating chamber (17). The locking key (13) is in the shape of an elongated strip, and one end of the locking key (13) can be pivotally mounted on the third accommodating chamber (17). The other end of the locking key (13) is provided with a positioning portion (131) that can movably pass through the guide hole (171). The locking key (13) can swing relative to the first connecting seat (1) between a position in which the positioning portion (131) and the ferrule (21) are opposite and offset. When the positioning portion (131) and the ferrule (21) are opposite, the ferrule (21) can be restricted from moving in a direction of retreating into the first accommodating chamber (15).

7. The lock according to claim 6, characterized in that: A third top spring (18) is also provided, one end of which elastically abuts against the inner wall of the third accommodating cavity (17), and the other end of which elastically abuts against the locking key (13), and is used to apply an elastic force to the locking key (13) to swing in the relative direction between the positioning portion (131) and the clamping sleeve (21).

8. The lock according to claim 1, characterized in that: The hook portion (11) is L-shaped, and the lower end of the hook portion (11) is connected to the first connecting seat (1).

9. A sheet-like door threshold, comprising an outer door threshold (4) and an inner door threshold (5) pivotally mounted on the outer door threshold (4), characterized in that: It also includes a lock as described in any one of claims 1 to 8, wherein the lock is installed on the inner door fence (5), the outer door fence (4) is provided with a lock groove (100) for cooperating with the lock tongue (2), the inner door fence (5) can swing relative to the outer door fence (4) between a position in which the lock tongue (2) and the lock groove (100) are aligned and offset, and the outer door fence (4) is also provided with a hook groove (200) cooperating with the hook portion (11), and the hook portion (11) can swing between a position of entering the hook groove (200) and a position of exiting as the inner door fence (5) swings.

10. The sheet-like threshold according to claim 9, wherein: The locking groove (100) is directly formed on the outer door rail (4), or a second connecting seat (41) having the locking groove (100) is further provided, and the second connecting seat (41) is installed on the outer door rail (4).

11. The sheet-shaped door threshold according to claim 10, characterized in that: A moving block (43) is movably installed in the lock slot (100), and the moving block (43) can move between a position flush with the opening of the lock slot (100) and a position away from the opening of the lock slot (100). A fourth top spring (44) is also provided, and the fourth top spring (44) is used to apply an elastic force to the moving block (43) to move in a direction flush with the opening of the lock slot (100).

12. The sheet-like door threshold according to claim 9, wherein: A movable pin (51) is movably installed at a position corresponding to the lock at the bottom of the inner door fence (5); a lock hole (300) is provided at a position corresponding to the lower portion of the movable pin (51) of the outer door fence (4); the movable pin (51) is linked with the lock key (13) via a pull rope (52) and can move between a position of being inserted into the lock hole (300) and a position of being withdrawn as the lock key (13) swings; a fifth top spring (53) is also provided, and the fifth top spring (53) is used to apply an elastic force to the movable pin (51) to move in a direction of being inserted into the lock hole (300).

13. The sheet-like door threshold according to claim 9, characterized in that: A first swinging member (61) of a connecting shaft (62) is fixed to the top of the inner door fence (5) on the side away from the lock, and the outer door fence (4) is provided with an axis hole (63). The connecting shaft (62) is inserted into the axis hole (63) from top to bottom to realize the rotational cooperation between the first swinging member (61) and the outer door fence (4), and a limiting member (64) is provided at the free end of the connecting member to limit the connection shaft (62) from being separated from the axis hole (63); a second swinging member (65) is fixed to the bottom of the inner door fence (5) on the side away from the lock, and a latch (66) is fixed to the outer door fence (4), and one end of the second swinging member (65) is rotationally connected to the latch (66).

14. The sheet-shaped door threshold according to claim 13, characterized in that: A guide groove (67) is formed at the opening position of the upper end of the shaft hole (63); a guide portion for contacting the guide groove (67) is formed at a position above the first swinging member (61) corresponding to the guide groove (67); when the first swinging member (61) swings along with the inner door rail (5) in the direction in which the lock tongue (2) and the lock groove (100) are staggered, the first swinging member (61) can move upward relative to the seat body through the cooperation of the guide portion and the guide groove (67).

15. The sheet-like door threshold according to claim 13, wherein: A latching position is formed at the upper end of the latch pin (66), and a latching block (68) adapted to the latching position is formed on the second swinging member (65). The latching block (68) can move between a position of entering the latching slot and a position of being away from the latching slot as the inner door bar (5) swings. When the lock tongue (2) is aligned with the lock slot (100), the latching block (68) is located in the latching slot.

16. The sheet-like door threshold according to claim 11, characterized in that: The outer door fence (4) is fixed to the position to be installed by a fixing mechanism, and the fixing mechanism includes a locking member (71) movably screwed to the outer door fence (4), and the locking member (71) can move between a position in close contact with and a position separated from the position to be installed relative to the outer door fence (4). The locking member (71) is also screwed to a locking member (72), and the locking member (72) can move between a position in close contact with the outer door fence (4) to lock and a position separated from the locking member (71).

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